package com.yhy.wxzn.wcs.aop;

import com.alibaba.fastjson.JSON;
import com.yhy.wxzn.common.utils.SpringUtil;
import com.yhy.wxzn.wcs.entity.WcsInterfaceLog;
import com.yhy.wxzn.wcs.service.impl.WcsInterfaceLogServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;

import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ThreadPoolExecutor;


/**
 * @des 拦截controller 日志
 */
@Slf4j
@Aspect
@Component
public class InterfaceLogAspect {

    @Resource
    private ThreadPoolExecutor threadPool;


    // 配置织入点
    @Pointcut("@annotation(InterfaceLog)")
    public void logPointCut() {
    }


    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "logPointCut()", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Object jsonResult) {
        handleLog(joinPoint, null, jsonResult);
    }


    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e         异常
     */
    @AfterThrowing(value = "logPointCut()", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Exception e) {
        handleLog(joinPoint, e, null);
    }


    protected void handleLog(final JoinPoint joinPoint, final Exception e, Object jsonResult) {
        try {
            // 获得注解
            InterfaceLog controllerLog = getAnnotationLog(joinPoint);
            if (controllerLog == null) {
                return;
            }

            // *========数据库日志=========*//
            WcsInterfaceLog interfaceLog = new WcsInterfaceLog();
            interfaceLog.setStatus(BusinessStatus.SUCCESS.ordinal());
            // 返回参数
            interfaceLog.setInterfaceParamsRet(JSON.toJSONString(jsonResult));

            if (e != null) {
                interfaceLog.setStatus(BusinessStatus.FAIL.ordinal());
                interfaceLog.setInterfaceParamsRet(StringUtils.substring(e.getMessage(), 0, 2000));
            }
            //设置操作时间
            interfaceLog.setSendTime(new Date());

            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerLog, interfaceLog);

            // 保存数据库
            threadPool.execute(
                    ()-> SpringUtil.getBean(WcsInterfaceLogServiceImpl.class).save(interfaceLog)
            );
        } catch (Exception exp) {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param interfaceLogDB 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, WcsInterfaceLog interfaceLogDB) throws Exception {
        String params = argsArrayToString(joinPoint.getArgs());
        interfaceLogDB.setInterfaceParamsIn(StringUtils.substring(params, 0, 2000));
    }

    /**
     * 是否存在注解，如果存在就获取
     */
    private InterfaceLog getAnnotationLog(JoinPoint joinPoint) throws Exception {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();

        if (method != null) {
            return method.getAnnotation(InterfaceLog.class);
        }
        return null;
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param interfaceLog   日志
     * @param interfaceLogDB 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, InterfaceLog interfaceLog, WcsInterfaceLog interfaceLogDB) throws Exception {
        // 设置action动作
        interfaceLogDB.setInterfaceMethodDes(interfaceLog.value());

        setRequestValue(joinPoint, interfaceLogDB);

    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray) {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0) {
            for (int i = 0; i < paramsArray.length; i++) {
                if (!isFilterObject(paramsArray[i])) {
                    Object jsonObj = JSON.toJSON(paramsArray[i]);
                    params += jsonObj.toString() + " ";
                }
            }
        }
        return params.trim();
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o) {
        Class<?> clazz = o.getClass();
        if (clazz.isArray()) {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        } else if (Collection.class.isAssignableFrom(clazz)) {
            Collection collection = (Collection) o;
            for (Iterator iter = collection.iterator(); iter.hasNext(); ) {
                return iter.next() instanceof MultipartFile;
            }
        } else if (Map.class.isAssignableFrom(clazz)) {
            Map map = (Map) o;
            for (Iterator iter = map.entrySet().iterator(); iter.hasNext(); ) {
                Map.Entry entry = (Map.Entry) iter.next();
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }
}
